Update README.md

Author: ilijastuden

README.md

@@ -217,10 +217,13 @@ $middleware_stack->add(new ApplyAuthenticationMiddleware('authentication_transpo
 
 This will tell `ApplyAuthenticationMiddleware` to check for `authentication_transport` attribute, and apply it to request and response if found.
 
-Second argument of `ApplyAuthenticationMiddleware`'s constructor lets you configure when transport will be applied - when entering middleware stack, or when existing it. Default is when entering middleware stack:
+Second argument of `ApplyAuthenticationMiddleware`'s constructor is `$apply_on_exit` argument. It lets you configure when transport will be applied - when entering middleware stack, or when existing it. Default is `FALESE` (when entering middleware stack):
 
 ```php
-$middleware_stack->add(new ApplyAuthenticationMiddleware('authentication_transport', true)); // Apply when exiting
+$middleware_stack->add(new ApplyAuthenticationMiddleware(
+    'authentication_transport', 
+    true // Apply when exiting
+));
 ``` 
 
 **Note**: Reason why we do this in a separate middleware, instead of exiting part of Authentication middleware is because we may need to clean up request (remove invalid cookie for example).